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Start by applying a gradient (light gray to white) to the background. Create two gray rectangles using rectangular shape tool. Place it on the top and bottom as shown. Create a rectangle for the header using rectangular shape tool. Apply gradient overlay style.

Create a rounded rectangle using rectangle shape tool. Press Ctrl+T. Right Click and select Warp. Adjust the setting as shown.
Enable "subtract from shape area" at the top bar. Create a rectangle using rectangular shape tool.

Create a circle using elliptical shape tool.
Ctrl+Click to get the selection. Contract the selection by 3 pixels. Create a new layer. Apply Black to white gradient. Change layer mode to "linear light" for this layer.

Create a new file. Apply blue to white gradient in radial mode. Press F5 to open brush window. Select brush as shown. Apply brush settings as shown in the shots below. Create a new layer and apply the brush strokes randomly.